Yes, newly issued ETF funds have a closed period, and the closed period of each ETF fund is different. After the closed period, the fund is traded on the stock exchange, and the closed period is mainly the period when the fund manager first opens a position.

ETF funds take a specific index as the tracking object and buy some or all of the stocks in the index in order to obtain the same income as the index. They belong to the floor fund and need to open a floor fund account to trade.